600+600+415+110+678+802+450+350+260 = 5, 265
5,265/9= 585 calories burned in total
(Correct me if wrong)
Assume that x gallon water is added: 35% antifreeze
= 1 / (x + 1) = 0.35
1 = 0.35 x + 0.35
0.65 = 0.35(x)
x = 1.857 gallons
The answer is 1.89 gallons of waters should be added to 1 pure antifreeze to obtain a solution that is 35% antifreeze.
Since a square has four sides you divide 215 by 4 your answer will be 53.75
Each side 53.75 long
I dont know if its not supposed to be in a different form but i got 665.5 :)